blob: 0669cba2f4e99acb36087dba329b11cc8f560417 [file] [log] [blame]
#include <stdio.h>
#include <common/cfgparse.h>
#include <common/errors.h>
#include <proto/arg.h>
#include <proto/log.h>
#include <proto/proto_http.h>
#include <proto/sample.h>
#include <dac.h>
static struct {
void *atlasimgptr;
char *jsonpath;
char *cookiename;
size_t cookienamelen;
da_atlas_t atlas;
da_evidence_id_t useragentid;
da_severity_t loglevel;
char separator;
unsigned char daset:1;
} global_deviceatlas = {
.loglevel = 0,
.jsonpath = 0,
.cookiename = 0,
.cookienamelen = 0,
.useragentid = 0,
.daset = 0,
.separator = '|',
};
static int da_json_file(char **args, int section_type, struct proxy *curpx,
struct proxy *defpx, const char *file, int line,
char **err)
{
if (*(args[1]) == 0) {
memprintf(err, "deviceatlas json file : expects a json path.\n");
return -1;
}
global_deviceatlas.jsonpath = strdup(args[1]);
return 0;
}
static int da_log_level(char **args, int section_type, struct proxy *curpx,
struct proxy *defpx, const char *file, int line,
char **err)
{
int loglevel;
if (*(args[1]) == 0) {
memprintf(err, "deviceatlas log level : expects an integer argument.\n");
return -1;
}
loglevel = atol(args[1]);
if (loglevel < 0 || loglevel > 3) {
memprintf(err, "deviceatlas log level : expects a log level between 0 and 3, %s given.\n", args[1]);
} else {
global_deviceatlas.loglevel = (da_severity_t)loglevel;
}
return 0;
}
static int da_property_separator(char **args, int section_type, struct proxy *curpx,
struct proxy *defpx, const char *file, int line,
char **err)
{
if (*(args[1]) == 0) {
memprintf(err, "deviceatlas property separator : expects a character argument.\n");
return -1;
}
global_deviceatlas.separator = *args[1];
return 0;
}
static int da_properties_cookie(char **args, int section_type, struct proxy *curpx,
struct proxy *defpx, const char *file, int line,
char **err)
{
if (*(args[1]) == 0) {
memprintf(err, "deviceatlas cookie name : expects a string argument.\n");
return -1;
} else {
global_deviceatlas.cookiename = strdup(args[1]);
}
global_deviceatlas.cookienamelen = strlen(global_deviceatlas.cookiename);
return 0;
}
static size_t da_haproxy_read(void *ctx, size_t len, char *buf)
{
return fread(buf, 1, len, ctx);
}
static da_status_t da_haproxy_seek(void *ctx, off_t off)
{
return fseek(ctx, off, SEEK_SET) != -1 ? DA_OK : DA_SYS;
}
static void da_haproxy_log(da_severity_t severity, da_status_t status,
const char *fmt, va_list args)
{
if (global_deviceatlas.loglevel && severity <= global_deviceatlas.loglevel) {
char logbuf[256];
vsnprintf(logbuf, sizeof(logbuf), fmt, args);
ha_warning("deviceatlas : %s.\n", logbuf);
}
}
#define DA_COOKIENAME_DEFAULT "DAPROPS"
/*
* module init / deinit functions. Returns 0 if OK, or a combination of ERR_*.
*/
static int init_deviceatlas(void)
{
int err_code = 0;
if (global_deviceatlas.jsonpath != 0) {
FILE *jsonp;
da_property_decl_t extraprops[] = {{0, 0}};
size_t atlasimglen;
da_status_t status;
if (global.nbthread > 1) {
ha_alert("deviceatlas: multithreading is not supported for now.\n");
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
jsonp = fopen(global_deviceatlas.jsonpath, "r");
if (jsonp == 0) {
ha_alert("deviceatlas : '%s' json file has invalid path or is not readable.\n",
global_deviceatlas.jsonpath);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
da_init();
da_seterrorfunc(da_haproxy_log);
status = da_atlas_compile(jsonp, da_haproxy_read, da_haproxy_seek,
&global_deviceatlas.atlasimgptr, &atlasimglen);
fclose(jsonp);
if (status != DA_OK) {
ha_alert("deviceatlas : '%s' json file is invalid.\n",
global_deviceatlas.jsonpath);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
status = da_atlas_open(&global_deviceatlas.atlas, extraprops,
global_deviceatlas.atlasimgptr, atlasimglen);
if (status != DA_OK) {
ha_alert("deviceatlas : data could not be compiled.\n");
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
if (global_deviceatlas.cookiename == 0) {
global_deviceatlas.cookiename = strdup(DA_COOKIENAME_DEFAULT);
global_deviceatlas.cookienamelen = strlen(global_deviceatlas.cookiename);
}
global_deviceatlas.useragentid = da_atlas_header_evidence_id(&global_deviceatlas.atlas,
"user-agent");
global_deviceatlas.daset = 1;
fprintf(stdout, "Deviceatlas module loaded.\n");
}
out:
return err_code;
}
static void deinit_deviceatlas(void)
{
if (global_deviceatlas.jsonpath != 0) {
free(global_deviceatlas.jsonpath);
}
if (global_deviceatlas.daset == 1) {
free(global_deviceatlas.cookiename);
da_atlas_close(&global_deviceatlas.atlas);
free(global_deviceatlas.atlasimgptr);
}
da_fini();
}
static int da_haproxy(const struct arg *args, struct sample *smp, da_deviceinfo_t *devinfo)
{
struct chunk *tmp;
da_propid_t prop, *pprop;
da_status_t status;
da_type_t proptype;
const char *propname;
int i;
tmp = get_trash_chunk();
chunk_reset(tmp);
propname = (const char *)args[0].data.str.str;
i = 0;
for (; propname != 0; i ++, propname = (const char *)args[i].data.str.str) {
status = da_atlas_getpropid(&global_deviceatlas.atlas,
propname, &prop);
if (status != DA_OK) {
chunk_appendf(tmp, "%c", global_deviceatlas.separator);
continue;
}
pprop = &prop;
da_atlas_getproptype(&global_deviceatlas.atlas, *pprop, &proptype);
switch (proptype) {
case DA_TYPE_BOOLEAN: {
bool val;
status = da_getpropboolean(devinfo, *pprop, &val);
if (status == DA_OK) {
chunk_appendf(tmp, "%d", val);
}
break;
}
case DA_TYPE_INTEGER:
case DA_TYPE_NUMBER: {
long val;
status = da_getpropinteger(devinfo, *pprop, &val);
if (status == DA_OK) {
chunk_appendf(tmp, "%ld", val);
}
break;
}
case DA_TYPE_STRING: {
const char *val;
status = da_getpropstring(devinfo, *pprop, &val);
if (status == DA_OK) {
chunk_appendf(tmp, "%s", val);
}
break;
}
default:
break;
}
chunk_appendf(tmp, "%c", global_deviceatlas.separator);
}
da_close(devinfo);
if (tmp->len) {
--tmp->len;
tmp->str[tmp->len] = 0;
}
smp->data.u.str.str = tmp->str;
smp->data.u.str.len = tmp->len;
return 1;
}
static int da_haproxy_conv(const struct arg *args, struct sample *smp, void *private)
{
da_deviceinfo_t devinfo;
da_status_t status;
const char *useragent;
char useragentbuf[1024] = { 0 };
int i;
if (global_deviceatlas.daset == 0 || smp->data.u.str.len == 0) {
return 1;
}
i = smp->data.u.str.len > sizeof(useragentbuf) ? sizeof(useragentbuf) : smp->data.u.str.len;
memcpy(useragentbuf, smp->data.u.str.str, i - 1);
useragentbuf[i - 1] = 0;
useragent = (const char *)useragentbuf;
status = da_search(&global_deviceatlas.atlas, &devinfo,
global_deviceatlas.useragentid, useragent, 0);
return status != DA_OK ? 0 : da_haproxy(args, smp, &devinfo);
}
#define DA_MAX_HEADERS 24
static int da_haproxy_fetch(const struct arg *args, struct sample *smp, const char *kw, void *private)
{
struct hdr_idx *hidx;
struct hdr_ctx hctx;
const struct http_msg *hmsg;
da_evidence_t ev[DA_MAX_HEADERS];
da_deviceinfo_t devinfo;
da_status_t status;
char vbuf[DA_MAX_HEADERS][1024] = {{ 0 }};
int i, nbh = 0;
if (global_deviceatlas.daset == 0) {
return 1;
}
CHECK_HTTP_MESSAGE_FIRST();
smp->data.type = SMP_T_STR;
/**
* Here we go through the whole list of headers from start
* they will be filtered via the DeviceAtlas API itself
*/
hctx.idx = 0;
hidx = &smp->strm->txn->hdr_idx;
hmsg = &smp->strm->txn->req;
while (http_find_next_header(hmsg->chn->buf->p, hidx, &hctx) == 1 &&
nbh < DA_MAX_HEADERS) {
char *pval;
size_t vlen;
da_evidence_id_t evid = -1;
char hbuf[24] = { 0 };
/* The HTTP headers used by the DeviceAtlas API are not longer */
if (hctx.del >= sizeof(hbuf) || hctx.del <= 0 || hctx.vlen <= 0) {
continue;
}
vlen = hctx.vlen;
memcpy(hbuf, hctx.line, hctx.del);
hbuf[hctx.del] = 0;
pval = (hctx.line + hctx.val);
if (strcmp(hbuf, "Accept-Language") == 0) {
evid = da_atlas_accept_language_evidence_id(&global_deviceatlas.
atlas);
} else if (strcmp(hbuf, "Cookie") == 0) {
char *p, *eval;
int pl;
eval = pval + hctx.vlen;
/**
* The cookie value, if it exists, is located between the current header's
* value position and the next one
*/
if (extract_cookie_value(pval, eval, global_deviceatlas.cookiename,
global_deviceatlas.cookienamelen, 1, &p, &pl) == NULL) {
continue;
}
vlen = (size_t)pl;
pval = p;
evid = da_atlas_clientprop_evidence_id(&global_deviceatlas.atlas);
} else {
evid = da_atlas_header_evidence_id(&global_deviceatlas.atlas,
hbuf);
}
if (evid == -1) {
continue;
}
i = vlen > sizeof(vbuf[nbh]) ? sizeof(vbuf[nbh]) : vlen;
memcpy(vbuf[nbh], pval, i - 1);
vbuf[nbh][i - 1] = 0;
ev[nbh].key = evid;
ev[nbh].value = vbuf[nbh];
ev[nbh].value[vlen] = 0;
++ nbh;
}
status = da_searchv(&global_deviceatlas.atlas, &devinfo,
ev, nbh);
return status != DA_OK ? 0 : da_haproxy(args, smp, &devinfo);
}
static struct cfg_kw_list dacfg_kws = {{ }, {
{ CFG_GLOBAL, "deviceatlas-json-file", da_json_file },
{ CFG_GLOBAL, "deviceatlas-log-level", da_log_level },
{ CFG_GLOBAL, "deviceatlas-property-separator", da_property_separator },
{ CFG_GLOBAL, "deviceatlas-properties-cookie", da_properties_cookie },
{ 0, NULL, NULL },
}};
/* Note: must not be declared <const> as its list will be overwritten */
static struct sample_fetch_kw_list fetch_kws = {ILH, {
{ "da-csv-fetch", da_haproxy_fetch, ARG12(1,STR,STR,STR,STR,STR,STR,STR,STR,STR,STR,STR,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
{ NULL, NULL, 0, 0, 0 },
}};
/* Note: must not be declared <const> as its list will be overwritten */
static struct sample_conv_kw_list conv_kws = {ILH, {
{ "da-csv-conv", da_haproxy_conv, ARG12(1,STR,STR,STR,STR,STR,STR,STR,STR,STR,STR,STR,STR), NULL, SMP_T_STR, SMP_T_STR },
{ NULL, NULL, 0, 0, 0 },
}};
__attribute__((constructor))
static void __da_init(void)
{
/* register sample fetch and format conversion keywords */
sample_register_fetches(&fetch_kws);
sample_register_convs(&conv_kws);
cfg_register_keywords(&dacfg_kws);
hap_register_build_opts("Built with DeviceAtlas support.", 0);
hap_register_post_check(init_deviceatlas);
hap_register_post_deinit(deinit_deviceatlas);
}